NGC 2787

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NGC 2787
NGC 2787.jpg
NGC 2787 as observed by the Hubble Space Telescope (HST).
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 09h 19m 18.5s[1]
Declination +69° 12′ 12″[1]
Redshift 696 ± 8 km/s[1]
Distance 24 ± 4 Mly (7.5 ± 1.2 Mpc)[2]
Apparent magnitude (V) 11.8[1]
Characteristics
Type SB(r)0+[1]
Apparent size (V) 3′.2 × 2′.0[1]
Notable features barred galaxy
Other designations
UGC 4914,[1] PGC 26341[1]
See also: Galaxy, List of galaxies

NGC 2787 is a barred lenticular galaxy approximately 24 million light-years away in the constellation Ursa Major. In 1999, the Hubble Space Telescope took a look at NGC 2787. The supermassive black hole at the core has a mass of 4.1+0.4
−0.5
×107 M
.[3]

LINER emission[edit]

NGC 2787 contains a low-ionization nuclear emission-line region (LINER), a type of region that is characterized by spectral line emission from weakly ionized atoms.[4] LINERs are very common within lenticular galaxies, approximately one-fifth of nearby lenticular galaxies contain LINERs.[5]

References[edit]

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 2787. Retrieved 2006-12-13. 
  2. ^ J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. Bibcode:2001ApJ...546..681T. arXiv:astro-ph/0011223Freely accessible. doi:10.1086/318301. 
  3. ^ Graham, Alister W. (November 2008), "Populating the Galaxy Velocity Dispersion - Supermassive Black Hole Mass Diagram: A Catalogue of (Mbh, σ) Values", Publications of the Astronomical Society of Australia, 25 (4): 167–175, Bibcode:2008PASA...25..167G, doi:10.1071/AS08013. 
  4. ^ L. C. Ho; A. V. Filippenko; W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement. 112 (2): 315–390. Bibcode:1997ApJS..112..315H. arXiv:astro-ph/9704107Freely accessible. doi:10.1086/313041. 
  5. ^ L. C. Ho; A. V. Filippenko; W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. V. Demographics of Nuclear Activity in Nearby Galaxies". Astrophysical Journal. 487 (2): 568–578. Bibcode:1997ApJ...487..568H. arXiv:astro-ph/9704108Freely accessible. doi:10.1086/304638. 

External links[edit]